6991703 has 4 divisors (see below), whose sum is σ = 7012200. Its totient is φ = 6971208.

The previous prime is 6991693. The next prime is 6991711. The reversal of 6991703 is 3071996.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6991703 - 2⁴ = 6991687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6991723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9728 + ... + 10421.

It is an arithmetic number, because the mean of its divisors is an integer number (1753050).

Almost surely, 2^6991703 is an apocalyptic number.

6991703 is a deficient number, since it is larger than the sum of its proper divisors (20497).

6991703 is a wasteful number, since it uses less digits than its factorization.

6991703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20496.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 6991703 is about 2644.1828605450. The cubic root of 6991703 is about 191.2175093965.

The spelling of 6991703 in words is "six million, nine hundred ninety-one thousand, seven hundred three".